Segment and Geographic Information - Net Revenues and Adjusted EBITDA (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information
Net revenue	$ 3,284,000	$ 3,857,000	$ 6,277,000	$ 7,335,000
Adjusted EBITDA	(108,000)	311,000	(221,000)	517,000
Less: reconciling items	(270,000)	(180,000)	(476,000)	(368,000)
Net income (loss)	(378,000)	131,000	(697,000)	149,000
Depreciation and amortization	91,000	77,000	176,000	158,000
Equity-based compensation and related taxes	133,000	88,000	245,000	175,000
Interest expense, net	6,000	9,000	14,000	16,000
Other (income) expense, net	(1,000)	2,000	(1,000)	5,000
Provision for income taxes, net	1,000	4,000	2,000	2,000
Other	40,000	0	40,000	12,000
Total reconciling items	270,000	180,000	476,000	368,000
Lease impairment	40,000
Impairment and other charges	40,000	12,000		12,000
U.S.
Segment Reporting Information
Net revenue	2,796,000	3,098,000	5,338,000	5,919,000
Adjusted EBITDA	(28,000)	323,000	(58,000)	550,000
International
Segment Reporting Information
Net revenue	488,000	759,000	939,000	1,416,000
Adjusted EBITDA	$ (80,000)	$ (12,000)	$ (163,000)	$ (33,000)